Mastering SAP ABAP

Designing the business logic

The business logic layer is meant to handle business objects and the interaction between them. Decouple it from the service and database layers—it should know as little about the database access or user interaction as possible, yet exchange information with them as needed using a level of abstraction, such as interfaces or base classes. The business logic should focus on transforming and calculating data, leaving other tasks to other layers.

Minimize the complexity of the business logic itself by separating concerns into different areas. Keep the processing, workflow, and business entities separated and loosely coupled. The separation will make the implementation easier to follow, whereas loose coupling will allow ...